[Pdns-users] Upgrading Auth Server directly from 4.1.14 to 4.4.1

[Nikolaos Milas]

Hello,

We are (still) using PowerDNS Auth Server 4.1.14 (on CentOS 7) with LDAP 
backend (simple mode).

Can we upgrade directly to 4.4.1 provided we do pertinent config changes 
as described in the upgrade guide, or it is suggested to upgrade in 
steps, e.g. to the last point release of each major version (4.1.14 --> 
4.2.3 --> 4.3.2 --> 4.4.1)?

After checking documentation:

    https://doc.powerdns.com/authoritative/upgrading.html

...I would say that, apart from the ldap backend schema changes (in 
dnsdomain2.schema and pdns-domaininfo.schema), the only change I can see 
affecting us is deprecation of "local-ipv6" directive.

By the way, the LDAP backend documentation states "Master (support): 
No", yet there is a section (Master Mode) with configuration for Master 
operation.These changes will allow master operation in the future, or 
rather master support (i.e. Zone Change Notifications and AXFRs) is in 
fact available?

Of course, notifications & AXFRs to DNS Servers with LDAP Backend may 
not lead to zone updates due to LDAP limitations (and thus should be 
disallowed by configuration), yet they will allow updates of all other 
NS servers.

Please advise!

Thanks a lot,
Nick